clang-cl: Add support for asm listings (/FA and /Fa)
This adds support for outputing the assembly to a file during compilation.
It does this by changing the compilation pipeling to not use the integrated
assembler, and keep the intermediate assembler file.
Differential Revision: http://llvm-reviews.chandlerc.com/D1946
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@192902 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index ae62993..101b83c 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -1446,6 +1446,8 @@
if (TC->useIntegratedAs() &&
!C.getArgs().hasArg(options::OPT_save_temps) &&
+ !C.getArgs().hasArg(options::OPT__SLASH_FA) &&
+ !C.getArgs().hasArg(options::OPT__SLASH_Fa) &&
isa<AssembleJobAction>(JA) &&
Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) {
const Tool *Compiler =
@@ -1568,8 +1570,10 @@
}
}
-/// \brief Create output filename based on ArgValue, which could either be a
-/// full filename, filename without extension, or a directory.
+/// \brief Create output filename based on ArgValue, which could either be a
+/// full filename, filename without extension, or a directory. If ArgValue
+/// does not provide a filename, then use BaseName, and use the extension
+/// suitable for FileType.
static const char *MakeCLOutputFilename(const ArgList &Args, StringRef ArgValue,
StringRef BaseName, types::ID FileType) {
SmallString<128> Filename = ArgValue;
@@ -1617,6 +1621,17 @@
(isa<PreprocessJobAction>(JA) || JA.getType() == types::TY_ModuleFile))
return "-";
+ // Is this the assembly listing for /FA?
+ if (JA.getType() == types::TY_PP_Asm &&
+ (C.getArgs().hasArg(options::OPT__SLASH_FA) ||
+ C.getArgs().hasArg(options::OPT__SLASH_Fa))) {
+ // Use /Fa and the input filename to determine the asm file name.
+ StringRef BaseName = llvm::sys::path::filename(BaseInput);
+ StringRef FaValue = C.getArgs().getLastArgValue(options::OPT__SLASH_Fa);
+ return C.addResultFile(MakeCLOutputFilename(C.getArgs(), FaValue, BaseName,
+ JA.getType()), &JA);
+ }
+
// Output to a temporary file?
if ((!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps) &&
!C.getArgs().hasArg(options::OPT__SLASH_Fo)) ||